The Milwaukee SHOCKWAVE Impact Duty Magnetic Attachment with two Phillips #2 Bits magnetizes the bit tip for maximum fastener retention. The Milwaukee SHOCKWAVE Impact Duty driver bits are engineered to be the most durable, best-fitting driver bits on the market. The WEAR GUARD TIP delivers increased wear resistance which protects the impact bits fit over the life of the bit. The compact design of the magnetizer sits on the shank to allow for better visibility and access in common applications. Magnetizer designed for 2 and longer impact driver bits. SHOCKWAVE Impact Duty driver bits are designed for use with Impact Drivers and Drill Drivers.